$ git clone -n https://gitee.com/src-opencloudos-rpms/libpng15.git /var/lib/mock/dist-oc8-build-237008-82349/root/chroot_tmpdir/scmroot/libpng15
Cloning into '/var/lib/mock/dist-oc8-build-237008-82349/root/chroot_tmpdir/scmroot/libpng15'...
$ git fetch origin d13fe410aeec116b510d0145e78a4084f3db91b6:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libpng15
 * [new ref]         d13fe410aeec116b510d0145e78a4084f3db91b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d13fe41 import libpng15-1.5.30-8.tl3